The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1887-05-14
SCIENCE AND INDUSTRY.

Mrs. Livermore shows that there
are now 227 occupations open to women
as against seven at the beginning Of the
century. Louis Republican.
Preliminary tests have shown that
iron cooled while q strong current Of
electricity was passing through it was
increased fully one-half in tensile
strength and ductility.
During 1886 eleven new asteroids
were detected, increasing the number
known to 264. Of this total, fifty-seven
have been discovered by DIR. j. Palisa,
of Vienna, and forty-six by DR.. Peters.
of Clinton, N. Y.
Out of Is, 900 earthquakes observed
on coast lines the German seismologist.
Kluge. found that only 124 were accom-
panied by sea waves, although very
large proportion of the shocks had prob
ably originated under the sea.
| Professor Bonamico, of the Royal
Naval School of Leghorn, has invented
an important instrument for showing
not only the speed. but also indicating
the relative position of one ship to an
other, and so preventing collisions.
"A manufacturer of Roubaix has in
vented very curious application of
electricity to looms. He adopts an in
dicator which strikes when thread
breaks, and thus saves the weaver from
the close attention to the quickly nov
ing threads which is so injurious to the
ight.-P0pular Science NeDs.
An apparatus of iron and glass, in
which a pressure of one thousand at
mospheres can be developed for the
purpose of studying the influence of
great pressure on animal life, has been
exhibited to biologists in France. With
it deep sea animals can be observed un-
der their natural compression. Spring
field Times.
The census of 1880 reported the
capital invested in agriculture in Mas
sachusetts was $164,000,000, against
$22, ,000,0 in the manufacture of boots
and shoes, $26, 600, 900 in the manufac-
ture of woolen goods. and $72, 100000
in the manufacture of cotton goods. -
Yankee Blade.
The cut nail industry kept full pace
with other branches of the iron and
steel business during 1886. The total
production reached S,16O,973 kegs of
100 pounds each against 6,696,S1 kegs
in 1885, 7,5s1,379 kegs in 1884. and
1852. 737 in 1888. The cut nail product.
like that of pig iron and steel, was the
largest the country ever saw.-Broob-
Ign Eagle.
The very rapid progress which has
been made within recent years in the
manufacture and treatment of steel.
and in the investigation of the proper
ties of other alloys of iron than those
with carbon, and the influence of i'm
purities on the properties of Steel have
left all our textbooks so far behind that
a work intelligently recording our pres
ent practice, and collecting and analyz-
ing the scattered information existing
in public and private records, has been
greatly needed. Boston Budget.
Professor Milne. of Japan. who is
an excellent authority on earthquakes,
which are very frequent in that country.
thinks that the electric disturbances
which SO often accompany the shocks
are the consequences rather than the
causes of the latter. 1t is really the
: earthquake which produces the elec.
, trical phenomena. In Japan earth
, quakes are attributed by the ignoran
either to the action of an eight-legget
earthquake insect living under ground
or to the movements of a great fish
which ordinarily has rock on his heat
to keep him quiet.-M Y. Ledger.